Refrigerator with ultraviolet light emitting diode

ABSTRACT

A refrigerator with an ultraviolet LED may be provided that includes: a first wall surface; a second wall surface; a reflector disposed between the first wall surface and the second wall surface, and comprising an inner curved surface and an outer surface disposed on the first wall surface and the second wall surface; a first base disposed on a first end of the inner curved surface of the reflector; a second base disposed on a second end of the inner curved surface of the reflector; a first ultraviolet LED being disposed on the first base, and configured to emit ultraviolet lights to the inner curved surface of the reflector; and a second ultraviolet LED being disposed on the second base, and configured to emit ultraviolet lights to the inner curved surface of the reflector.

CROSS-REFERENCE TO RELATED APPLICATION

This application is a Continuation Application of U.S. application Ser.No. 13/270,753 filed on Oct. 11, 2011, which claims priority under 35U.S.C. § 119 from Korean Patent Application No. 10-2010-0109360, filedin the Republic of Korea on Nov. 4, 2010, Korean Patent Application No.10-2010-0108909, filed in the Republic of Korea on Nov. 3, 2010, KoreanPatent Application No. 10-2010-0108902, filed in the Republic of Koreaon Nov. 3, 2010, Korean Patent Application No. 10-2010-0098457, filed inthe Republic of Korea on Oct. 8, 2010, Korean Patent Application No.10-2010-0098462, filed in the Republic of Korea on Oct. 8, 2010, KoreanPatent Application No. 10-2010-0098470, filed in the Republic of Koreaon Oct. 8, 2010, Korean Patent Application No. 10-2010-0098464, filed inthe Republic of Korea on Oct. 8, 2010, Korean Patent Application No.10-2010-0098461, filed in the Republic of Korea on Oct. 8, 2010, KoreanPatent Application No. 10-2010-0098467, filed in the Republic of Koreaon Oct. 8, 2010, and Korean Patent Application No. 10-2010-0098465,filed in the Republic of Korea on Oct. 8, 2010, the subject matters ofwhich are incorporated herein by reference.

BACKGROUND

1. Field

Embodiments may relate to a refrigerator with an ultraviolet lightemitting diode.

2. Background

In general, a refrigerator is a home appliance for storing food anddrink at a low temperature in its internal space shielded by a door. Therefrigerator refrigerates the inside of its storage space by usingrefrigerant circulating at a refrigeration cycle and cool air generatedfrom heat exchange, so that food and drink can be optimally stored.

As such, due to the change of dietary life and variety of users'preference, a refrigerator has a tendency to become larger andmulti-functional. The storage space provides various housing spaces suchas a drawer, a shelf and a basket. The inside of the refrigeratorincludes a lighting device for illuminating the inside thereof at thetime of opening the door of the refrigerator.

However, the refrigerator does not include a means for effectivelyremoving harmful substances and bacteria within the refrigerator.

SUMMARY

A refrigerator with an ultraviolet LED, the refrigerator may comprise: afirst wall surface; a second wall surface; a reflector disposed betweenthe first wall surface and the second wall surface, and comprising aninner curved surface and an outer surface disposed on the first wallsurface and the second wall surface; a first base disposed on a firstend of the inner curved surface of the reflector; a second base disposedon a second end of the inner curved surface of the reflector; a firstultraviolet LED being disposed on the first base, and configured to emitultraviolet lights to the inner curved surface of the reflector; and asecond ultraviolet LED being disposed on the second base, and configuredto emit ultraviolet lights to the inner curved surface of the reflector.

A refrigerator with an ultraviolet LED, the refrigerator may comprise:an innernal wall comprising a plurality of corners; a curved reflectordisposed on at least one corner of the plurality of corners; a basedisposed on at least one end of both ends of the curved reflector; and aplurality of ultraviolet LEDs disposed on the base and configured toemit ultraviolet lights to the reflector.

BRIEF DESCRIPTION OF THE DRAWINGS

Arrangements and embodiments may be described in detail with referenceto the following drawings in which like reference numerals refer to likeelements and wherein:

FIG. 1 is a view showing an internal configuration of a refrigeratorincluding an ultraviolet LED according to a first to an eightembodiments;

FIG. 2 is a perspective view showing an arrangement of a base contactingwith a first wall surface and a second wall surface according to thefirst embodiment;

FIG. 3 is a plan view showing arrangements of the first wall surface,the second wall surface, a third wall surface and a fourth wall surfaceaccording to the first to the sixth embodiments;

FIG. 4 is a cross sectional view showing a state where a reflectioncover is included in the base according to the first embodiment;

FIG. 5 is a block diagram of a power controller including theultraviolet LED according to the first embodiment;

FIG. 6 is a perspective view showing an arrangement of a guide meanscontacting with the first wall surface and the second wall surfaceaccording to a second embodiment;

FIG. 7 is a perspective view showing an arrangement of a case where aslide member of FIG. 6 is located at a first position;

FIG. 8 is a perspective view showing an arrangement of a case where theslide member of FIG. 6 is located at a second position;

FIG. 9 is an exploded perspective view of FIG. 7 and FIG. 8;

FIG. 10 is a view showing FIG. 7 and FIG. 8 viewed in a slidingdirection of the slide member;

FIG. 11 is a perspective view showing an arrangement of a guide meanscontacting with a first wall surface and a second wall surface accordingto a third embodiment;

FIG. 12 is a perspective view showing an arrangement where a movingmember of FIG. 11 is located at a first position;

FIG. 13 is a perspective view showing an arrangement where a movingmember of FIG. 11 is located at a second position;

FIG. 14 is an exploded perspective view of FIG. 12 and FIG. 13;

FIG. 15 is a view showing one side of the guide member of FIG. 12 viewedfrom the outside;

FIG. 16 is a view showing FIG. 15 viewed in a moving direction of themoving member;

FIG. 17 is a perspective view showing an arrangement of a framecontacting with a first wall surface and a second wall surface accordingto a fourth embodiment;

FIG. 18 is an exploded perspective view showing a state where a baseaccording to the fourth embodiment has been separated from the frame;

FIG. 19 is a perspective view showing an arrangement of a reflectorcontacting with a first wall surface and a second wall surface accordingto a fifth embodiment;

FIG. 20 is a plan view showing a state where the base of FIG. 19 hasbeen disposed;

FIG. 21 is a plan view showing how light generated from the ultravioletLED of FIG. 19 is emitted;

FIG. 22 is a perspective view showing an arrangement of a reflectorcontacting with a first wall surface and a second wall surface accordingto a sixth embodiment;

FIG. 23 is a plan view showing how light generated from the ultravioletLED of FIG. 22 is emitted;

FIG. 24 is a schematic view showing a state where the ultraviolet LED isdisposed in a quadrangular frame included in a cool air inlet port or acool air outlet port according to a seventh embodiment;

FIG. 25 is a front view showing an arrangement of a case where a heatsink is included in a base according to the seventh embodiment;

FIG. 26 is a perspective view showing that the ultraviolet LEDirradiates light to air passing through the quadrangular frame includedin the cool air inlet port or the cool air outlet port according to theseventh embodiment;

FIG. 27 is a schematic view showing a state where the ultraviolet LED isdisposed in a quadrangular light guide plate included in a cool airinlet port or a cool air outlet port according to a eighth embodiment;

FIG. 28 is a front view showing an arrangement of a case where a heatsink is included in a base according to the eighth embodiment;

FIG. 29 is a perspective view showing that the ultraviolet LEDirradiates light to air passing through a quadrangular light guide plateincluded in the cool air inlet port or the cool air outlet portaccording to the eighth embodiment.

DETAILED DESCRIPTION

A thickness or a size of each layer may be magnified, omitted orschematically shown for the purpose of convenience and clearness ofdescription. The size of each component may not necessarily mean itsactual size.

It should be understood that when an element is referred to as being‘on’ or “under” another element, it may be directly on/under theelement, and/or one or more intervening elements may also be present.When an element is referred to as being ‘on’ or ‘under’, ‘under theelement’ as well as ‘on the element’ may be included based on theelement.

An embodiment may be described in detail with reference to theaccompanying drawings.

FIG. 1 is a view showing an internal configuration of a refrigeratorincluding an ultraviolet LED according to a first to an eightembodiments. Referring to FIG. 1, the refrigerator is divided into anupper part and a lower part by a dividing plate 124. A freezer and afridge are installed in upper part and the lower part respectively. Amachine room is installed in the bottom of the back of the fridge. Anevaporator 120 is installed in the back of the inside of the freezer. Acool air supply fan 121 supplying cool air to the freezer and fridge isinstalled over the evaporator 120. The evaporator 120 and the cool airsupply fan 121 are isolated by a louver 122 including a cool air outletport 123 formed in the upper portion thereof. A compressor 110, acondenser and a dryer are installed in the machine room.

Also, a main cool air supply duct 127, which is connected and suppliescool air to the fridge, is formed at the back of the evaporator 120.Return ducts 125 a and 125 b returning the air within the freezer andthe fridge to the evaporator 120 are formed within the dividing plate124. Cool air inlet ports 126 a and 126 b introducing the air of thefreezer and the fridge to the return ducts 125 a and 125 b are formed onand beneath the front end of the dividing plate 124.

A base (for example, PCB) having the ultraviolet LED mounted therein isdisposed in a portion denoted by “A”, i.e., between a first member (notshown) and a second member 130 b of the refrigerator, so that light isemitted toward the interior space of the refrigerator. In this manner,harmful substances and bacteria increasing within the refrigerator canbe effectively removed. Therefore, it is possible to maintain thesanitary conditions of the food and drink stored within therefrigerator.

The cool air circulation of the refrigerator having the aforementionedstructure and the ultraviolet LED will be described as follows. When thecool air supply fan 121 rotates, the cool air supply fan 121 introducescool air and supplies the cool air to the freezer and the fridge.

Cool air is supplied to the freezer by the cool air supply fan 121through cool air outlet port 123 of the louver 122. Then, after thefreezer temperature is lowered, the cool air is collected to theevaporator 120 through the cool air inlet port 126 a formed in the frontend of the dividing plate 124 and the return duct 125 a.

Cool air is supplied to the fridge through the main cool air supply duct127 of the evaporator 120 and is supplied to each part of the fridgethrough a side duct 128 of the fridge and a cool air outlet port 129formed in a portion of each side duct 128. As such, refrigerant whichhas cooled the fridge by supplying the cool air is collected to theevaporator 120 through the cool air inlet port 126 b of the dividingplate 124 and the return duct 125 b. The refrigerant which is collectedto the evaporator 120 from the freezer and the fridge contacts with theevaporator 120 and turns into cool air. Then, the cool air is suppliedagain to the fridge the freezer through the cool air supply fan 121.

The cool air circulation of the refrigerator described above can besummarized as follows. One ends of the return ducts 125 a and 125 b ofthe freezer and the fridge include the cool air inlet ports 126 a and126 b. The air within the freezer and the fridge, which has passedthrough the cool air inlet ports 126 a and 126 b, is returned to theevaporator 120 by the return ducts 125 a and 125 b. The evaporator 120cools the air contacted therewith. The cool air supply fan 121introduces the air cooled by the evaporator 120 through the rotationthereof and delivers the air to the freezer and the fridge through thecool air outlet ports 123 and 129 provided to the freezer and thefridge.

FIG. 2 is a perspective view showing an arrangement of a base contactingwith a first wall surface and a second wall surface according to thefirst embodiment. FIG. 3 is a plan view showing arrangements of thefirst wall surface, the second wall surface, a third wall surface and afourth wall surface according to the first to the sixth embodiments.Referring to FIGS. 2 and 3, a refrigerator with an ultraviolet LED mayinclude a first member 130 a, a second member 130 b, a third member 130c, a fourth member 130 d, a base 140, a first fixing member 150 a, asecond fixing member 150 b, an ultraviolet LED 160, a heat sink 170, areflection cover 180 and a power controller 190.

The internal wall of the refrigerator is constituted by the first member130 a, the second member 130 b, the third member 130 c and the fourthmember 130 d. The first member 130 a, the second member 130 b, the thirdmember 130 c and the fourth member 130 d are coated with a metallicmaterial having reflectivity. The first member 130 a, the second member130 b, the third member 130 c and the fourth member 130 d may be formedof the same metallic material. Here, the reflectances of the metallicmaterials of the first member 130 a, the second member 130 b, the thirdmember 130 c and the fourth member 130 d are the same to each other, sothat light emitted from the ultraviolet LED 160 can be uniformlyreflected in the refrigerator. Also, the metallic material of at leastone of the first member 130 a, the second member 130 b, the third member130 c and the fourth member 130 d may be aluminum. Here, since thereflectance of the aluminum is 90% to 100%, it is possible to maximizereflection effect.

The arrangement of the internal wall of the refrigerator will bedescribed as follows. The direction that one surface of the secondmember 130 b faces is perpendicular to the direction that one surface ofthe first member 130 a faces. The direction that one surface of thethird member 130 c faces is perpendicular to the direction that onesurface of the second member 130 b faces. The direction that one surfaceof the fourth member 130 d faces is perpendicular to the directions thatone surfaces of the first member 130 a and the third member 130 c face.That is, among the first member 130 a, the second member 130 b, thethird member 130 c and the fourth member 130 d, the first member 130 ais opposite to the third member 130 c and the second member 130 b isopposite to the fourth member 130 d.

One side and the other side of the base 140 respectively contact withthe first member 130 a and the second member 130 b which are placedwithin the refrigerator and have one surfaces having facing directionscrossing each other (approximately perpendicularly to each other). Theone side and the other side of the base 140 are disposed symmetricallywith each other with respect to a reference plane “C” dividing the firstmember 130 a and the second member 130 b.

The first fixing member 150 a contacts with the first member 130 a andone side of the base 140, and fixes the base 140 to the first member 130a. The second fixing member 150 b contacts with the other side of thebase 140 and the second member 130 b, and fixes the base 140 to thesecond member 130 b. The first fixing member 150 a and the second fixingmember 150 b are disposed symmetrically with each other with respect tothe reference plane “C” dividing the first member 130 a and the secondmember 130 b. The first fixing member 150 a fixes the base to the firstmember 130 a by using a cured adhesive between the bottom surface of theone side of the base 140 and a portion of the first fixing member 150 awhich contacts with the first member 130 a. The second fixing member 150b fixes the base to the second member 130 b by using the cured adhesivebetween the bottom surface of the other side of the base 140 and aportion of the second fixing member 150 b which contacts with the secondmember 130 b. Here, epoxy resin may be used as the adhesive. The epoxyresin is a synthetic polymer based adhesive and has a strong adhesivestrength.

The ultraviolet LEDs 160 are disposed on the top surface of the base 140and emit light toward the interior space of the refrigerator. In thismanner, the ultraviolet LED 160 is able to directly irradiate light tothe first member 130 a, the second member 130 b, the third member 130 cand the fourth member 130 d. Since the ultraviolet LED 160 is disposedbetween the first member 130 a and the second member 130 b, timerequired for the light emitted from the ultraviolet LED 160 to reach thefirst member 130 a and the second member 130 b is less than timerequired for the light to reach the third member 130 c and the fourthmember 130 d.

The heat sink 170 contacts with the bottom surface of the base 140 andcontacts with the first member 130 a and the second member 130 b, sothat a closed path having a triangular pillar prism is formed. In thismanner, the heat sink 170 radiates heat generated from the ultravioletLED 160 through the surface contact to the closed path formed from thecontact of the first member 130 a with the second member 130 b. Sincethe flat-shaped base 140 is disposed between the first member 130 a andthe second member 130 b, the closed path has a triangular cross section.A heat radiation sheet may be further included between the heat sink 170and the base 140. The heat sink 170 may be formed of a carbon nano tube(CNT) composite material. The carbon nano tube is a kind of a carbonallotrope consisting of carbons and has a shape of a tube winding in theshape of a cylinder a graphite sheet in which one carbon is combinedwith another carbon in the form of a hexagonal honeycomb. The carbonnano tube has a diameter of 1 to 100 nm. The carbon nano tube has highthermal property, high electrical conductivity and high strength, sothat the carbon nano tube can be used in the heat sink of theultraviolet LED 160.

The reflection cover 180 reflects the light emitted from the ultravioletLED 160. The internal structure of the reflection cover 180 will bedescribed in FIG. 4.

The power controller (not shown) may allow the ultraviolet 160 to repeatthe following operation. When a first setup time elapses after theultraviolet 160 becomes in an on-state, the ultraviolet 160 becomes inan off-state. When a second setup time elapses after the ultraviolet 160becomes in the off-state, the ultraviolet 160 becomes in the on-state.The power controller will be described in detail in FIG. 5.

FIG. 4 is a cross sectional view showing a state where a reflectioncover is included in the base according to the first embodiment.Referring to FIG. 4, a plurality of curved reflective surfaces 181 areformed on the inner surface of the reflection cover 180. The pluralityof the curved reflective surfaces 181 are formed at a regular interval.Due to the formation of the curved reflective surface 181, the lightemitted from the ultraviolet LED 160 is uniformly reflected in therefrigerator, so that sterilizing effect can be improved and the lightemitted from the ultraviolet LED 160 can be more uniformly reflected toeach part inside the refrigerator. Also, the plurality of the curvedreflective surfaces 181 may be formed at a random interval.

A locking projection 182 caught by the upper and lower portions of thebase 140 is formed in one end and the other end of the reflection cover180. Accordingly, the reflection cover 180 can be more securely fixed tothe base 140.

FIG. 5 is a block diagram of the power controller including theultraviolet LED according to the first embodiment. Referring to FIG. 5,the power controller 190 includes a time counter 191 and an operationcontroller 192. FIG. 5 will be described with reference to FIGS. 2 to 4.

In the operations of the ultraviolet LED 160 of FIGS. 2 to 4, harmfulsubstances and bacteria increasing within the refrigerator can beremoved by maintaining the on-state of the ultraviolet LED 160 all thetime. Otherwise, the ultraviolet LED 160 may be maintained in theon-state only during a certain period of time for the purpose of thereduction of the electric power and energy conservation

In other words, the ultraviolet LED 160 may repeat the operation asfollows. When the first setup time elapses after the ultraviolet LED 160becomes in an on-state, the ultraviolet 160 becomes in an off-state.When a second setup time elapses after the ultraviolet 160 becomes inthe off-state, the ultraviolet 160 becomes in the on-state. For example,the ultraviolet LED 160 may repeat the operation as follows. When thirtyminutes elapses after the ultraviolet LED 160 becomes in an on-state,the ultraviolet 160 becomes in an off-state. When one hour elapses afterthe ultraviolet 160 becomes in the off-state, the ultraviolet 160becomes in the on-state. As described in the control of on-off of theultraviolet 160, time can be also variously set without being limited tothis.

As such, the power controller 190 may be further added to the base 140so as to control the on-off of the ultraviolet 160. Here, the powercontroller 190 may be connected to the ultraviolet 160 through the base140. The power controller 190 includes the time counter 191 and theoperation controller 192.

The time counter 191 counts time and judges whether or not the countedtime corresponds to a set time. When the counted time does notcorrespond to the set time, the time counter 191 does not generate anoperation control signal. Only when the counted time corresponds to theset time, the time counter 191 generates the operation control signaland transmits to the operation controller 192. That is, when the countedtime corresponds to the set time, the time counter 191 continuouslygenerates the operation control signal and transmits to the operationcontroller 192. When the counted time does not correspond to the settime due to the elapse of time, the operation control signal is notgenerated by the time counter 191.

When the counted time corresponds to the set time, the operationcontroller 192 receives the operation control signal from the timecounter 191 and operates the ultraviolet 160. That is, when the countedtime corresponds to the set time, the operation controller 192continuously receives the operation control signal from the time counter191 and operates the ultraviolet 160. When the counted time does notcorrespond to the set time due to the elapse of time, the operationcontroller 192 does not receive the operation control signal from thetime counter 191 and is not able to operate the ultraviolet 160.

FIG. 6 is a perspective view showing an arrangement of a guide meanscontacting with a first wall surface and a second wall surface accordingto a second embodiment. FIG. 7 is a perspective view showing anarrangement of a case where a slide member of FIG. 6 is located at afirst position. FIG. 8 is a perspective view showing an arrangement of acase where the slide member of FIG. 6 is located at a second position.FIG. 9 is an exploded perspective view of FIG. 7 and FIG. 8. FIG. 10 isa view showing FIG. 7 and FIG. 8 viewed in a sliding direction of theslide member. Referring to FIGS. 3 and 6 to 10, a refrigerator with anultraviolet LED may include a first member 130 a, a second member 130 b,a third member 130 c, a fourth member 130 d, a guide means 240, a slidemember 250, a base 260, an ultraviolet LED 270, a first fixing member280 a, a second fixing member 280 b and a power controller.

The internal wall of the refrigerator is the same as that describedabove in FIG. 3.

One side and the other side of the guide means 240 are respectivelyconnected to the first member 130 a and the second member 130 b whichare placed within the refrigerator and have one surfaces having facingdirections crossing each other. The guide means 240 includes a guideplate 241, a pair of guide members 242 a and 242 b which are disposed onthe top surface of the guide plate 241 in the longitudinal directions ofone sides and the other sides thereof and have guide recesses formed inthe outer ends thereof, and a pair of elastic members 243 a and 243 bwhich are disposed between the pair of the guide members 242 a and 242 band slide the slide member 250 by adding an elastic force. The one sideand the other side of the guide means 240 are disposed symmetricallywith each other with respect to a reference plane dividing the firstmember 130 a and the second member 130 b.

The slide member 250 is formed of a heat radiating material and slideson the top surface of the guide means 240 in the longitudinal directionof the guide means 240. Here, the slide member 250 slides in thelongitudinal direction of a tangent line formed by the contact of thefirst member 130 a with the second member 130 b. Guide rails 250 a and250 b are formed symmetrically with each other in one side and the otherside of the slide member 250. The guide rails 250 a and 250 b are bentin the form of a “⊂”. Therefore, the guide rails 250 a and 250 b areinserted into the guide recesses, and then the slide member 250 slideson the top surface of the guide plate 241 in the longitudinal directionof the guide members 242 a and 242 b.

The slide member 250 formed in such a structure radiates heat generatedfrom the ultraviolet LED 270 through the surface contact to the outside.Since the slide member 250 is formed of a heat radiating material, theslide member 250 may be formed of a carbon nano tube (CNT) compositematerial.

The base 260 contacts with the top surface of the slide member 250. Aheat radiation sheet may be further included between the base 260 andthe slide member 250.

The ultraviolet LED 270 is disposed on the slide member 250 and emitslight toward the interior space of the refrigerator. In this manner, theultraviolet LED 270 is able to directly irradiate light to the firstmember 130 a, the second member 130 b, the third member 130 c and thefourth member 130 d.

Before and after the slide member 250 slides, the ultraviolet LED 270irradiates light to the first member 130 a, the second member 130 b, thethird member 130 c of which one surface faces in a directionperpendicular to the direction that one surface of the second member 130b faces, and the fourth member 130 d of which one surface faces in adirection perpendicular to both the direction that one surface of thefirst member 130 a faces and the direction that one surface of the thirdmember 130 c faces.

The first fixing member 280 a contacts with the first member 130 a andthe bottom surface of one side of the guide means 240, and fixes theguide means 240 to the first member 130 a. The second fixing member 280b contacts with the second member 130 b and the bottom surface of theother side of the guide means 240, and fixes the guide means 240 to thesecond member 130 b. The first fixing member 280 a and the second fixingmember 280 b are disposed symmetrically with each other with respect toa reference plane dividing the first member 130 a and the second member130 b. The first fixing member 280 a fixes the guide means 240 to thefirst member 130 a by using a cured adhesive between the bottom surfaceof the one side of the guide means 240 and a portion of the first fixingmember 280 a which contacts with the first member 130 a. The secondfixing member 280 b fixes the guide means 240 to the second member 130 bby using the cured adhesive between the bottom surface of the other sideof the guide means 240 and a portion of the second fixing member 280 bwhich contacts with the second member 130 b. Here, epoxy resin may beused as the adhesive.

The power controller (not shown) may allow the ultraviolet 270 to repeatthe following operation. When a first setup time elapses after theultraviolet 270 becomes in an on-state, the ultraviolet 270 becomes inan off-state. When a second setup time elapses after the ultraviolet 270becomes in the off-state, the ultraviolet 270 becomes in the on-state.The power controller will be described in detail in FIG. 5.

FIG. 11 is a perspective view showing an arrangement of a guide meanscontacting with a first wall surface and a second wall surface accordingto a third embodiment. FIG. 12 is a perspective view showing anarrangement where a moving member of FIG. 11 is located at a firstposition. FIG. 13 is a perspective view showing an arrangement where amoving member of FIG. 11 is located at a second position. FIG. 14 is anexploded perspective view of FIG. 12 and FIG. 13. FIG. 15 is a viewshowing one side of the guide member of FIG. 12 viewed from the outside.FIG. 16 is a view showing FIG. 15 viewed in a moving direction of themoving member. Referring to FIGS. 3 and 11 to 16, a refrigerator with anultraviolet LED may include a first member 130 a, a second member 130 b,a third member 130 c, a fourth member 130 d, a guide means 340, a movingmember 350, a base 360, an ultraviolet LED 370, a first fixing member380 a, a second fixing member 380 b and a power controller.

The internal wall of the refrigerator is the same as that describedabove in FIG. 3.

One side and the other side of the guide means 340 are respectivelyconnected to the first member 130 a and the second member 130 b whichare placed within the refrigerator and have one surfaces having facingdirections crossing each other. The guide means 340 includes a guideplate 341 and a pair of guide members 342. The pair of guide members 342are disposed on the guide plate 341 in the longitudinal directions ofone sides and the other sides thereof and include guide recesses 342 aformed therein and a plurality of locking recesses 342 b which extendfrom the guide recesses 342 a in such a manner as to allow the movingmember 350 to move step by step. The one side and the other side of theguide means 340 are disposed symmetrically with each other with respectto a reference plane dividing the first member 130 a and the secondmember 130 b.

The moving member 350 is formed of a heat radiating material and ismovable step by step on the guide means 340 in the longitudinaldirection of the guide means 340. Here, the moving member 350 moves inthe longitudinal direction of a tangent line formed by the contact ofthe first member 130 a with the second member 130 b. The moving member350 includes bent portions 350 a and a projection 350 b including aplurality of protrusions formed on the inner surface of the bent portion350 a such that the moving member 350 is caught by the locking recesses342 b. The bent portions 350 a are formed symmetrically with each otherin one side and the other side of the moving member 350. The bentportions 350 a are bent in the form of in the form of a “

”. That is, it can be easily understood that FIG. 16 is a crosssectional view taken along an alternated long and short dash line AA ofFIG. 15. The bent portions 350 a are formed symmetrically with eachother. The projections 350 b are formed symmetrically with each other.Each protrusion of the projection 350 b is caught by one among theplurality of the locking recesses 342 b. Here, the plurality of theprotrusions are formed at the same interval as that of the lockingrecesses 342 b, so that the moving member 350 is able to move movablestep by step.

The moving member 350 formed in such a structure radiates heat generatedfrom the ultraviolet LED 370 through the surface contact to the outside.Since the moving member 350 is formed of a heat radiating material, themoving member 350 may be formed of a carbon nano tube (CNT) compositematerial.

The base 360 contacts with the top surface of the moving member 350. Aheat radiation sheet may be further included between the base 360 andthe moving member 350.

The ultraviolet LED 370 is disposed on the top surface of the movingmember 350 and emits light toward the interior space of therefrigerator. In this manner, the ultraviolet LED 370 is able todirectly irradiate light to the first member 130 a, the second member130 b, the third member 130 c and the fourth member 130 d.

Before and after the moving member 350 moves, the ultraviolet LED 370irradiates light to the first member 130 a, the second member 130 b, thethird member 130 c of which one surface faces in a directionperpendicular to the direction that one surface of the second member 130b faces, and the fourth member 130 d of which one surface faces in adirection perpendicular to both the direction that one surface of thefirst member 130 a faces and the direction that one surface of the thirdmember 130 c faces.

The first fixing member 380 a contacts with the first member 130 a andthe bottom surface of one side of the guide means 340, and fixes theguide means 340 to the first member 130 a. The second fixing member 380b contacts with the second member 130 b and the bottom surface of theother side of the guide means 340, and fixes the guide means 340 to thesecond member 130 b. The first fixing member 380 a and the second fixingmember 380 b are disposed symmetrically with each other with respect toa reference plane dividing the first member 130 a and the second member130 b. The first fixing member 380 a fixes the guide means 340 to thefirst member 130 a by using a cured adhesive between the bottom surfaceof the one side of the guide means 340 and a portion of the first fixingmember 380 a which contacts with the first member 130 a. The secondfixing member 380 b fixes the guide means 340 to the second member 130 bby using the cured adhesive between the bottom surface of the other sideof the guide means 340 and a portion of the second fixing member 380 bwhich contacts with the second member 130 b. Here, epoxy resin may beused as the adhesive.

The power controller (not shown) may allow the ultraviolet 370 to repeatthe following operation. When a first setup time elapses after theultraviolet 370 becomes in an on-state, the ultraviolet 370 becomes inan off-state. When a second setup time elapses after the ultraviolet 370becomes in the off-state, the ultraviolet 370 becomes in the on-state.The power controller will be described in detail in FIG. 5.

FIG. 17 is a perspective view showing an arrangement of a framecontacting with a first wall surface and a second wall surface accordingto a fourth embodiment. FIG. 18 is an exploded perspective view showinga state where a base according to the fourth embodiment has beenseparated from the frame. Referring to FIGS. 3 and 17 to 18, arefrigerator with an ultraviolet LED may include a first member 130 a, asecond member 130 b, a third member 130 c, a fourth member 130 d, aframe 440, a base 450, a first fixing member 460 a, a second fixingmember 460 b, an ultraviolet LED 470, a heat sink 480 and a powercontroller.

The internal wall of the refrigerator is the same as that describedabove in FIG. 3.

One side and the other side of the frame 440 respectively contact withthe first member 130 a and the second member 130 b which are disposedadjacent to each other within the refrigerator. The frame 440 is a “

”-shaped three-dimensional structure as viewed from a side thereof. Theone side and the other side of the frame 440 are disposed symmetricallywith each other with respect to a reference plane dividing the firstmember 130 a and the second member 130 b. The upper portion of the frame440 includes a coupling recess having almost the same length as thelongitudinal length of the base 440 in such a manner that the base 450is inserted and fixed to the frame 440. The lower portion of the frame440 includes a hole formed therein to which the heat sink 480 isinserted and fixed. The hole is formed to have a quadrangular shape forthe quadrangular heat sink 480 to be inserted and fitted.

The base 450 is coupled to and separated from the frame 440. That is,the base 440 may be inserted and fixed to the coupling recess of theframe 440 and may be separated from the coupling recess. Since the base450 is coupled to and separated from the frame 440, the base 450 withthe ultraviolet LED 470 can be easily replaced, maintained and repaired.

The first fixing member 460 a contacts with the first member 130 a andone side of the frame 440, and fixes the frame 440 to the first member130 a. The second fixing member 460 b contacts with the other side ofthe frame 440 and the second member 130 b, and fixes the frame 440 tothe second member 130 b. The first fixing member 460 a and the secondfixing member 460 b are disposed symmetrically with each other withrespect to the reference plane “C” dividing the first member 130 a andthe second member 130 b. The first fixing member 460 a fixes the frame440 to the first member 130 a by using a cured adhesive between thebottom surface of the one side of the frame 440 and a portion of thefirst fixing member 480 a which contacts with the first member 130 a.The second fixing member 460 b fixes the frame 440 to the second member130 b by using the cured adhesive between the bottom surface of theother side of the frame 440 and a portion of the second fixing member460 b which contacts with the second member 130 b. Here, epoxy resin maybe used as the adhesive.

The ultraviolet LED 470 is disposed on the top surface of the base 450and emits light toward the interior space of the refrigerator. In thismanner, the ultraviolet LED 470 is able to directly irradiate light tothe first member 130 a, the second member 130 b, the third member 130 cand the fourth member 130 d.

The heat sink 480 contacts with the bottom surface of the base 450 andcontacts with the first member 130 a and the second member 130 b, sothat a closed path having a triangular pillar prism is formed. In thismanner, the heat sink 480 radiates heat generated from the ultravioletLED 470 through the surface contact to the closed path formed from thecontact of the first member 130 a with the second member 130 b. Sincethe flat-shaped base 450 is disposed between the first member 130 a andthe second member 130 b, the closed path has a triangular cross section.A heat radiation sheet may be further included between the heat sink 480and the base 450. The heat sink 480 may be formed of a carbon nano tube(CNT) composite material.

The power controller (not shown) may allow the ultraviolet LED 470 torepeat the following operation. When a first setup time elapses afterthe ultraviolet LED 470 becomes in an on-state, the ultraviolet LED 470becomes in an off-state. When a second setup time elapses after theultraviolet LED 470 becomes in the off-state, the ultraviolet LED 470becomes in the on-state. The power controller will be described indetail in FIG. 5.

FIG. 17 is a perspective view showing an arrangement of a reflectorcontacting with a first wall surface and a second wall surface accordingto a fifth embodiment. FIG. 20 is a plan view showing a state where thebase of FIG. 19 has been disposed. FIG. 21 is a plan view showing howlight generated from the ultraviolet LED of FIG. 19 is emitted.Referring to FIGS. 3 and 19 to 21, a refrigerator with an ultravioletLED may include a first member 130 a, a second member 130 b, a thirdmember 130 c, a fourth member 130 d, a first reflector 541, a secondreflector 542, a first base 551, a second base 552, a first fixingmember 561, a second fixing member 562, a first ultraviolet LED 571, asecond ultraviolet LED 572, a heat sink 580 and a power controller (notshown).

The internal wall of the refrigerator is the same as that describedabove in FIG. 3.

The first reflector 541 is disposed between the first member 130 a andthe second member 130 b which are placed within the refrigerator andhave one surfaces having facing directions crossing each other. Thefirst reflector 541 has a curved surface. The second reflector 542extends from one end of the first reflector 541 and is disposedsymmetrically with the first reflector 541. Therefore, the firstreflector 541 and the second reflector 542 have the same curvature. Thereflective surfaces of the first reflector 541 and the second reflector542 may be coated with aluminum. When the reflective surfaces are coatedwith aluminum, the reflectance of the reflectors can be maximized to 90%to 100%.

The first base 551 and the second base 552 are disposed in the extensiondirections of the first reflector 541 and the second reflector 542. Asshown in FIG. 20, the first base 551 and the second base 552 arerespectively formed obliquely in the curved directions of the firstreflector 541 and the second reflector 542 at acute angles (α and β)with respect to a reference plane “C” (denoted by an alternated long andshort dash line) dividing the first reflector 541 and the secondreflector 542. Here, the first base 551 and the second base 552 aredisposed symmetrically with each other with respect to a reference planedividing the first member 130 a and the second member 130 b.

The first reflector 541, the second reflector 542, the first base 551and the second base 552 may be formed of the same material. The firstreflector 541, the second reflector 542, the first base 551 and thesecond base 552 may be integrally formed with each other. When the firstreflector 541, the second reflector 542, the first base 551 and thesecond base 552 are integrally formed with each other, they come tooccupy a smaller interior space of the refrigerator, so that there is nonecessity of a refrigerator larger than necessary. The first base 551and the second base 552 may be attachable to and removable from thefirst reflector 541 and the second reflector 542.

When the first base 551 and the second base 552 may be attachable to andremovable from the first reflector 541 and the second reflector 542, itis easy to repair and check the first base 551 and the second base 552.

The first fixing member 561 contacts with the first member 130 a and oneside of the first reflector 541, and fixes the first reflector 541 tothe first member 130 a. The second fixing member 562 contacts with thesecond member 130 b and the other side of the second reflector 542, andfixes the second reflector 542 to the second member 130 b. The firstfixing member 561 and the second fixing member 562 are disposedsymmetrically with each other with respect to the reference plane “C”dividing the first member 130 a and the second member 130 b. The firstfixing member 561 fixes the first reflector 541 to the first member 130a by using a cured adhesive between the bottom surface of the one sideof the first reflector 541 and a portion of the first fixing member 561which contacts with the first member 130 a. The second fixing member 562fixes the second reflector 542 to the second member 130 b by using thecured adhesive between the bottom surface of the other side of thesecond reflector 542 and a portion of the second fixing member 562 whichcontacts with the second member 130 b. Here, epoxy resin may be used asthe adhesive.

The first ultraviolet LED 571 and the second ultraviolet LED 572 havethe same or similar numbers and are disposed symmetrically with eachother on the first base 551 and the second base 552 in the longitudinaldirections of the first base 551 and the second base 552, so that lightis emitted toward the interior space of the refrigerator. Specifically,the first ultraviolet LED 571 and the second ultraviolet LED 572 aredisposed on the first base 551 and the second base 552 like PCB. Here,the first ultraviolet LED 571 and the second ultraviolet LED 572irradiate light to the first member 130 a, the second member 130 b, thethird member 130 c and the fourth member 130 d.

The heat sink 580 contacts commonly with the bottom surfaces of thefirst base 551 and the second base 552 and radiates heat generated fromthe first ultraviolet LED 571 and the second ultraviolet LED 572. A heatradiation sheet may be further included between the first base 551 andthe heat sink 580 and between the second base 552 and the heat sink 580.The heat sink 580 may be formed of a carbon nano tube (CNT) compositematerial.

The power controller (not shown) may allow the first ultraviolet LED 571and the second ultraviolet LED 572 to repeat the following operation.When a first setup time elapses after the first ultraviolet LED 571 andthe second ultraviolet LED 572 become in an on-state, the firstultraviolet LED 571 and the second ultraviolet LED 572 become in anoff-state. When a second setup time elapses after the first ultravioletLED 571 and the second ultraviolet LED 572 become in the off-state, thefirst ultraviolet LED 571 and the second ultraviolet LED 572 become inthe on-state.

FIG. 22 is a perspective view showing an arrangement of a reflectorcontacting with a first wall surface and a second wall surface accordingto a sixth embodiment. FIG. 23 is a plan view showing how lightgenerated from the ultraviolet LED of FIG. 22 is emitted. Referring toFIGS. 3 and 22 to 23, a refrigerator an the ultraviolet LED may includea first member 130 a, a second member 130 b, a third member 130 c, afourth member 130 d, a reflector 543, a first base 553, a second base554, a first fixing member 563, a second fixing member 564, a firstultraviolet LED 573, a second ultraviolet LED 574, a first heat sink(not shown), a second heat sink (not shown) and a power controller (notshown).

The internal wall of the refrigerator is the same as that describedabove in FIG. 3.

The first reflector 543 is disposed between the first member 130 a andthe second member 130 b which are placed within the refrigerator andhave one surfaces having facing directions crossing each other. Thefirst reflector 543 has a curved surface. The reflective surface of thereflector 543 may be coated with aluminum. When the reflective surfacesare coated with aluminum, the reflectance of the reflectors can bemaximized to 90% to 100%.

The first base 553 and the second base 554 are disposed in the extensiondirections of one end and the other end of the reflector 543 and areformed obliquely toward the curved inner surface of the reflector 543.Here, the first base 553 and the second base 554 are disposedsymmetrically with each other with respect to a reference plane “C”dividing the first member 130 a and the second member 130 b.

The reflector 543, the first base 553 and the second base 554 may beformed of the same material. The reflector 543, the first base 553 andthe second base 554 may be integrally formed with each other. When thereflector 543, the first base 553 and the second base 554 are integrallyformed with each other, they come to occupy a smaller interior space ofthe refrigerator, so that there is no necessity of a refrigerator largerthan necessary. The first base 553 and the second base 554 may beattachable to and removable from the reflector 543. When the first base553 and the second base 554 are attachable to and removable from thereflector 543, it is easy to repair and check the first base 553 and thesecond base 554.

The first fixing member 563 contacts with the first member 130 a and thecurved surface of one side of the reflector 543, and fixes the curvedsurface of the one side of the reflector 543 to the first member 130 a.The second fixing member 564 contacts with the second member 130 b andthe curved surface of the other side of the reflector 543, and fixes thecurved surface of the other side of the reflector 543 to the secondmember 130 b. The first fixing member 563 and the second fixing member564 are disposed symmetrically with each other with respect to thereference plane “C” dividing the first member 130 a and the secondmember 130 b. The first fixing member 563 fixes the one side of thereflector 543 to the first member 130 a by using a cured adhesivebetween the bottom surface the one side of the reflector 543 and aportion of the first fixing member 563 which contacts with the firstmember 130 a. The second fixing member 564 fixes the other side of thereflector 543 to the second member 130 b by using a cured adhesivebetween the bottom surface the other side of the reflector 543 and aportion of the second fixing member 564 which contacts with the secondmember 130 b. Here, epoxy resin may be used as the adhesive.

The first ultraviolet LED 573 and the second ultraviolet LED 574 havethe same or similar numbers and are disposed symmetrically with eachother on the first base 553 and the second base 554 in the longitudinaldirections of the first base 553 and the second base 554, so that lightis emitted toward the interior space of the refrigerator. Specifically,the first ultraviolet LED 573 and the second ultraviolet LED 574 arerespectively disposed on the top surfaces of the first base 553 and thesecond base 554 like PCB. Here, the first ultraviolet LED 573 and thesecond ultraviolet LED 574 irradiate light to the first member 130 a,the second member 130 b, the third member 130 c and the fourth member130 d.

The first heat sink and the second heat sink contact with the bottomsurfaces of the first base 553 and the second base 554 respectively, andradiate heat generated from the first ultraviolet LED 573 and the secondultraviolet LED 574. A heat radiation sheet may be further includedbetween the first base 553 and the first heat sink and between thesecond base 554 and the second heat sink. The first and the second heatsinks may be formed of a carbon nano tube (CNT) composite material.

The power controller (not shown) may allow the first ultraviolet LED 573and the second ultraviolet LED 574 to repeat the following operation.When a first setup time elapses after the first ultraviolet LED 573 andthe second ultraviolet LED 574 become in an on-state, the firstultraviolet LED 573 and the second ultraviolet LED 574 become in anoff-state. When a second setup time elapses after the first ultravioletLED 573 and the second ultraviolet LED 574 become in the off-state, thefirst ultraviolet LED 573 and the second ultraviolet LED 574 become inthe on-state. The power controller will be described in detail in FIG.5.

FIG. 24 is a schematic view showing a state where an ultraviolet LED isdisposed in a quadrangular frame included in a cool air inlet port or acool air outlet port according to a seventh embodiment. Referring toFIGS. 1 and 24, the circumferences of the cool air inlet ports 126 a and126 b and the circumferences of the cool air outlet ports 123 and 129include a frame 630 including an inner empty space. An ultraviolet LED670 faces toward the center of the frame 630 and is disposed on theinner surface of the frame 630. The frame 630 has a quadrangular shape.The ultraviolet LEDs 670 are arranged in a regular form on four sidestoward the center of the frame 630. Here, the ultraviolet LEDs 670 arearranged apart from each other at a regular interval on each of the foursides toward the center of the frame 630, so that light emitted from theultraviolet LEDs 670 can be uniformly irradiated to each part of theinner space of the frame 630.

While the frame 630 has a quadrangular shape in the present invention,the frame 630 may have various shapes without being limited to thequadrangular shape.

FIG. 25 is a front view showing an arrangement of a case where a heatsink is included in a base according to the seventh embodiment.Referring to FIG. 25, a base 640 is disposed on the bottom surface ofthe ultraviolet LED 670. A heat sink 660 radiating heat generated fromthe ultraviolet LED 670 is provided under the base 640. A heat radiationsheet 650 may be further provided between the heat sink 660 and the base640.

The heat sink 660 may be formed of a carbon nano tube (CNT) compositematerial.

The power controller (not shown) may allow the ultraviolet LED 670 torepeat the following operation. When a first setup time elapses afterthe ultraviolet LED 670 becomes in an on-state, the ultraviolet LED 470becomes in an off-state. When a second setup time elapses after theultraviolet LED 670 becomes in the off-state, the ultraviolet LED 670becomes in the on-state. The power controller will be described indetail in FIG. 5.

FIG. 26 is a perspective view showing that the ultraviolet LEDirradiates light to air passing through the quadrangular frame includedin the cool air inlet port or the cool air outlet port according to theseventh embodiment. Referring to FIGS. 24 to 26, the ultraviolet LED 670surrounds air passing through the frame included in the cool air inletport 126 a and 126 b or the cool air outlet port 123 and 129 andirradiates light to the air perpendicular to the traveling direction ofthe air.

In this manner, the light irradiated from the ultraviolet LED 670 isirradiated to the air passing through the cool air inlet ports 126 a and126 b or the cool air outlet ports 123 and 129, so that effect ofsterilizing the air within the refrigerator can be enhanced.

FIG. 27 is a schematic view showing a state where an ultraviolet LED isdisposed in a quadrangular light guide plate included in a cool airinlet port or a cool air outlet port according to a eighth embodiment.Referring to FIG. 27, a light guide plate 730 including a plurality ofholes is provided to the cool air inlet ports 126 a and 126 b and thecool air outlet ports 123 and 129. An ultraviolet LED 770 is disposed onthe light guide plate 730 in the formation direction of the hole 730 ain the cool air inlet ports 126 a and 126 b and the cool air outletports 123 and 129. The light guide plate 730 has a quadrangular shapeand the ultraviolet LEDs 770 are arranged in the corners of the lightguide plate 730. Here, the holes are formed in the light guide plate 730at a regular interval, so that light emitted from the ultraviolet LED770 can be uniformly irradiated to the air passing through the holes 730a formed in the light guide plate 730. The holes may be also formed inthe light guide plate 730 at a random interval.

While the light guide plate 730 has a quadrangular shape in the presentinvention, the light guide plate 730 may have various shapes withoutbeing limited to the quadrangular shape.

FIG. 28 is a front view showing an arrangement of a case where a heatsink is included in a base according to the eighth embodiment. Referringto FIG. 28, a base 740 is disposed on the bottom surface of theultraviolet LED 770. A heat sink 760 radiating heat generated from theultraviolet LED 770 is provided under the base 740. A heat radiationsheet 750 may be further provided between the heat sink 660 and the base740.

The heat sink 760 may be formed of a carbon nano tube (CNT) compositematerial. The power controller (not shown) may allow the ultraviolet LED770 to repeat the following operation. When a first setup time elapsesafter the ultraviolet LED 770 becomes in an on-state, the ultravioletLED 770 becomes in an off-state. When a second setup time elapses afterthe ultraviolet LED 770 becomes in the off-state, the ultraviolet LED770 becomes in the on-state. The power controller will be described indetail in FIG. 5.

FIG. 29 is a perspective view showing that the ultraviolet LEDirradiates light to air passing through a quadrangular light guide plateincluded in the cool air inlet port or the cool air outlet portaccording to the eighth embodiment. Referring to FIGS. 27 to 29, thelight guide plate 730 passes air introduced by a cool air supply fanthrough the plurality of the holes 730 a. Here, the ultraviolet LED 770generates and irradiates light to the air, which passes through thelight guide plate 730, perpendicular to the formation direction of thehole 730 in the cool air inlet ports 126 a and 126 b and the cool airoutlet ports 123 and 129.

In this manner, the light irradiated from the ultraviolet LED 770 isirradiated to the air passing through the cool air inlet ports 126 a and126 b or the cool air outlet ports 123 and 129, so that effect ofsterilizing the air within the refrigerator can be enhanced.

Any reference in this specification to “one embodiment,” “anembodiment,” “example embodiment,” etc., means that a particularfeature, structure, or characteristic described in connection with theembodiment is included in at least one embodiment of the invention. Theappearances of such phrases in various places in the specification arenot necessarily all referring to the same embodiment. Further, when aparticular feature, structure, or characteristic is described inconnection with any embodiment, it is submitted that it is within thepurview of one skilled in the art to affect such feature, structure, orcharacteristic in connection with other ones of the embodiments.

Although embodiments have been described with reference to a number ofillustrative embodiments thereof, it should be understood that numerousother modifications and embodiments can be devised by those skilled inthe art that will fall within the spirit and scope of the principles ofthis disclosure. More particularly, various variations and modificationsare possible in the component parts and/or arrangements of the subjectcombination arrangement within the scope of the disclosure, the drawingsand the appended claims. In addition to variations and modifications inthe component parts and/or arrangements, alternative uses will also beapparent to those skilled in the art.

What is claimed is:
 1. A refrigerator with ultraviolet LEDs, the refrigerator comprising: a door; an internal wall which defines an interior space of the refrigerator, the internal wall comprising: a first wall; and a second wall coupled to the first wall; a reflector disposed between the first wall and the second wall, and comprising an inner curved surface and an outer surface disposed on the first wall and the second wall; a first base coupled to a first end of the reflector and having a predetermined angle with respect to the first end of the reflector; a second base coupled to a second end of the reflector and having a predetermined angle on the basis of the second end of the reflector; a first ultraviolet LED being disposed on the first base, and configured to emit ultraviolet lights to the inner curved surface of the reflector; and a second ultraviolet LED being disposed on the second base, and configured to emit ultraviolet lights to the inner curved surface of the reflector, wherein the first end of the reflector is coupled to the first wall, and wherein the second end of the reflector is coupled to the second wall.
 2. The refrigerator of claim 1, wherein the outer surface of the reflector comprises an outer surface first end coupled to the first wall and an outer surface second end coupled to the second wall.
 3. The refrigerator of claim 2, wherein the outer surface of the reflector is curved, and wherein the refrigerator further comprises: a first fixing member disposed between the first wall and the outer surface first end; and a second fixing member disposed between the second wall and the outer surface second end.
 4. The refrigerator of claim 3, wherein the first wall, the second wall and the reflector form a space.
 5. The refrigerator of claim 1, wherein the first base is extended from or is coupled to the first end of the inner curved surface of the reflector, and wherein the second base is extended from or is coupled to the second end of the inner surface of the reflector.
 6. The refrigerator of claim 1, wherein the reflector, the first base and the second base are formed of the same material.
 7. The refrigerator of claim 1, wherein the inner curved surface of the reflector is coated with aluminum.
 8. The refrigerator of claim 1, wherein the first ultraviolet LED and the second ultraviolet LED have the same numbers and are disposed symmetrically with each other on the first base and the second base in the longitudinal directions of the first base and the second base, and wherein each of the first base and the second base is a PCB.
 9. The refrigerator of claim 1, further comprising a first heat sink and a second heat sink, the first heat sink is in contact with a bottom surface of the first base and the second heat sink is in contact with a bottom surface of the second base.
 10. The refrigerator of claim 9, further comprising a heat radiation sheet disposed between the first base and the first heat sink.
 11. A refrigerator with ultraviolet LEDs, the refrigerator comprising: a door; an internal wall comprising a first wall, a second wall coupled to the first wall, and a third wall coupled to the second wall; a curved reflector coupled between two walls among the first wall, the second wall and the third wall; a base coupled to the curved reflector with a predetermined angle; and a plurality of ultraviolet LEDs coupled to the base and configured to emit ultraviolet lights to the curved reflector, wherein the plurality of ultraviolet LEDs becomes an on-state for a period of time when the door closes, wherein the plurality of ultraviolet LEDs becomes an off-state when the door opens, and wherein the plurality of ultraviolet LEDs is disposed toward the curved reflector.
 12. The refrigerator of claim 11, wherein the refrigerator further comprises an adhesive disposed between the curved reflector and at least one wall among the first wall, the second wall and the third wall.
 13. The refrigerator of claim 11, wherein at least one part of the curved reflector is spaced apart from the two walls among the first wall, the second wall and the third wall.
 14. The refrigerator of claim 11, wherein the base is extended from or is coupled to one end of the curved reflector.
 15. The refrigerator of claim 11, wherein the base is a PCB.
 16. The refrigerator of claim 11, further comprising a heat sink in contact with bottom surfaces of the base.
 17. The refrigerator of claim 11, wherein the reflector comprises a first reflector and a second reflector, wherein the second reflector extends from one end of the first reflector and is symmetrically disposed with the first reflector, wherein the base comprises a first base and a second base, wherein the first base is disposed on the first reflector, and the second base is disposed on the second reflector, wherein the plurality of ultraviolet LEDs comprises a first plurality of ultraviolet LEDs disposed on the first base, and a second plurality of ultraviolet LEDs disposed on the second base, and wherein the refrigerator further comprises a heat sink between the first base and the second base.
 18. The refrigerator of claim 1, wherein the first ultraviolet LED and the second ultraviolet LED become in an on-state for a period of time when the door closes, and wherein the first ultraviolet LED and the second ultraviolet LED become in an off-state when the door opens.
 19. The refrigerator of claim 1, wherein the first wall is a top wall of the refrigerator, and wherein the second wall is one side wall of the refrigerator.
 20. The refrigerator of claim 1, wherein the first wall and the second wall are two side wall of the refrigerator. 